Reasons to choose K-7
Released in 2009, K-7 has about 365 mm² of sensor area, 14.6 MP effective resolution, and a 750 g body. Use these values to narrow the field, not as an overall image-quality score.
Side-by-side comparison
Pentax K-7
vs Pentax K20D
VS
Sensor area
365 mm²
K-7365 mm²
K20D- Area ratio
- 1:1
- Absolute difference
- 0 mm²
- Relative difference
- 0%
The K-7 and K20D have the same sensor area. Compare pixel density, sensor architecture, and release generation to understand likely image-quality differences.
These cameras were released 1 years apart. Consider sensor generation when comparing pixel metrics.
Key specification differences
K-7MetricK20D
14.6 MPEffective pixels14.6 MP
23.4 × 15.6Sensor23.4 × 15.6
5 µmPixel pitch5 µm
25 µm²Pixel area25 µm²
4 MP/cm²Pixel density4 MP/cm²
1.54Crop factor1.54
—Maximum video—
750 gWeight800 g
SD/SDHC/MMCStorageSDHC, Secure Digital
Lithium-Ion D-LI90 rechargeable battery Li-ion batteryBatteryLithium Ion (D-LI50)
Amber marks the value that is generally preferable in this comparison context. It is not an overall camera score.
How to choose between these cameras
The K-7 and K20D have the same sensor area. The K-7 has the lighter body. The K-7 and K20D have the same effective resolution. The K-7 is the newer release. Also consider the lens system and subjects you shoot.
Reasons to choose K20D
Released in 2008, K20D has about 365 mm² of sensor area, 14.6 MP effective resolution, and a 800 g body. Use these values to narrow the field, not as an overall image-quality score.